Horace wyman



(No Model.)

H. WYMAN.

v CLUTCH. No. 495,540. Patented Apr. 18, 1893.

:1 h I? O4? 0 co J fi:; 1:?"

a '0 O 1: F6; 06

firaeew UNITED STATES PATENT OFFICE.

HORACE VYMAN, OF IVORGESTER, MASSACHUSETTS, ASSIGNOR TO THE OROMPTONLOOM WORKS, OF SAME PLACE.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 495,540, dated April18, 1893.

Application filed May 20, 1892. Serial No. 433,667. (No model.)

- for use in connection with looms and other half, 0', being loose onthe said shaft.

machinery.

My invention relates more especially to the construction of a loosepulley and the devices for sliding it laterally on the shaft to engageit with or disconnect it from the part of the clutch pulley fast on theshaft to be rotated.

Figure l, in plan view partially broken out, shows a clutch pulleyembodying my invention; and Fig. 2, an elevation looking at Fig. 1 inthe direction of the arrow thereon.

The frame-work A is and may be of any usual or suitable shape. Thisframe-work has suitable bearings A for the shaft A to be rotated. Theshaft A is hereih shown as provided with a brake pulley B and a toothedgear B, and alongside the said gear, and fast with relation to it andthe said shaft, is onehalf, 0, of a clutch orfriction pulley,thc otgerbe tween the contiguous faces of the clutch or friction pulley parts, Iplace preferably a friction washer or disk at of leather or othersuitable material. The loose pulley C is so shaped as to leave at itsouter side an annular pocket I), in which plays the inner ends of one ormore dogs or levers b, pivoted at 2 on cars 3 of a hub 0 made fast onthe shaft A by asuitable set screw 0', the said hub as herein shown,being hollow to receive the hub of the loose pulley as shown in Fig. l.The levers b are shown as of elbow shape, and their long arms arejointed by short links 0 to a collar 0 mounted loosely on the shaft Aand having an annular groove 0 into which enters loosely a suitableprojection at the inner end of a shipper lever 0 shown as pivoted at c.This lever as herein represented is jointed by a link (Z to an arm cl ofa rock shaft d in suitable bearings on the frame, said rock shaft havinga suitable handle (1 by which to move the collar 0 longitudinally on theshaft A when it is desired to clutch or to unclutch the pulleys.

The drawings show the clutch pulleys in engagement, the hand lever beingturned fully to the left thus sliding the collar 0 to the left,-

the short arms of the levers or dogs b at such time acting against thesides 6 of the pocket or chamber 1), and pushing the loose pulley C tothe left against the pulley C; but by turning the hand lever over to theright from the position Fig. 2, the collar 0 will be drawn to the right,turning the levers or dogs I)" so that their inner ends strike againstthe overhang ing or outer flange of the pocket, thus pulling the loosepulley part 0 away from the fast pulley part 0.

The driving belt, which in practice will always rest on the loose pulleyC, may be driven from any usual counter shaft.

This invention is not limited to the exact shape shown for the frictionfaces of the cl utch pulleys, or to the shape shown for the pocket orrecess at the outer face of the loose pulley, or to the exact shape ofthe dogs or levers b and their actuating devices.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

A shaft to be rotated; a friction clutch pulley part fast thereon; and aco-operating loose pulley part longitudinally movable and rotatable onthe said shaft and provided with an annular pocket or recess, combinedwith a dog or lever having one end located in said pocket or recess andpivotally supported on the shaft, and with devices including a slidingcollar and connecting link for moving said dog or lever to cause it whenturned in one direction to force the two parts of the clutch pulleyfirmly together, and in the other direction to effect the frictionaldisengagement of said pulley parts to thus leave the said shaft at rest,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HORACE WYMAN. WVitnesses:

GEO. W. GREGORY, E. JOSEPHINE BENNETT.

